Full time to part time 4x4 do I need hubs? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

mpierce9 · 12-14-2015, 08:03 PM

I've got a 1975 blazer with an np203 transfer case. About a year ago the front drive shaft broke and was removed. So far I have not replaced it. I did just have a part time kit installed in the transfer case. In order to install a new front drive shaft and have 4x4 operate correctly will I need to replace the full time hubs with manual locking hub?

Thanks.

**hatzie** · 12-14-2015, 08:54 PM

You can run part or full time 4wd with the full time 4wd slugs in the hubs. It's the same as driving with hub locks in the lock position.

If you want to disconnect the axle from the wheels install manual hub locks.

slotard · 12-14-2015, 08:56 PM

There are some advantages of manual - with them unlocked the axles and driveshaft won't spin, reducing friction and any vibrations - but they aren't mandatory.

**jocko** · 12-14-2015, 10:03 PM

it's worth it. factory spicer hubs are pricey, but Warn Premium locking hubs aren't too bad and they're plenty tough. About $150-270 new, depending on which ones you buy.
https://www.google.com/search?q=summ...+hubs&tbm=shop

enaberif · 12-14-2015, 11:56 PM

If your putting in a part time kit its silly NOT to put in manual hubs. The point of the part time kit is to take stress and wear off the front components. You can only complete this with a part time kit.

12-14-2015, 08:03 PM	#1
mpierce9 Registered User Join Date: Nov 2013 Location: ATLANTA Posts: 223	Full time to part time 4x4 do I need hubs? I've got a 1975 blazer with an np203 transfer case. About a year ago the front drive shaft broke and was removed. So far I have not replaced it. I did just have a part time kit installed in the transfer case. In order to install a new front drive shaft and have 4x4 operate correctly will I need to replace the full time hubs with manual locking hub? Thanks.

12-14-2015, 08:54 PM	#2
hatzie Moderator Join Date: Oct 2008 Location: Wentworth, NH Posts: 4,920	Re: Full time to part time 4x4 do I need hubs? You can run part or full time 4wd with the full time 4wd slugs in the hubs. It's the same as driving with hub locks in the lock position. If you want to disconnect the axle from the wheels install manual hub locks. __________________ 1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials... 1973-1991 GM Light Truck Service, Unit/Overhaul, Wiring Manuals, Parts Books and Some 1968-1999 GM Service Training textbooks in PDF 1988-1998 GMT400 CK service manual project 1988-1993 GMT400 CK parts books. 1967-1972 GM Light, Medium, & Heavy Truck Service Manuals in PDF Please include at least the year and model in your threads. It'll be easier to answer your questions. And please let us know if and how your repairs were successful.

12-14-2015, 08:56 PM	#3
slotard Registered User Join Date: Nov 2014 Location: Alameda, CA Posts: 877	Re: Full time to part time 4x4 do I need hubs? There are some advantages of manual - with them unlocked the axles and driveshaft won't spin, reducing friction and any vibrations - but they aren't mandatory. __________________ 1973 C20, 350/350

12-14-2015, 10:03 PM	#4
jocko Senior Member Join Date: Oct 2009 Location: Godley, TX Posts: 17,937	Re: Full time to part time 4x4 do I need hubs? it's worth it. factory spicer hubs are pricey, but Warn Premium locking hubs aren't too bad and they're plenty tough. About $150-270 new, depending on which ones you buy. https://www.google.com/search?q=summ...+hubs&tbm=shop

12-14-2015, 11:56 PM	#5
enaberif Registered User Join Date: Jan 2009 Location: Calgary, AB Posts: 1,181	Re: Full time to part time 4x4 do I need hubs? If your putting in a part time kit its silly NOT to put in manual hubs. The point of the part time kit is to take stress and wear off the front components. You can only complete this with a part time kit.



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